Maybe change your posture, do some stretching, some breathing exercises.

比如可以改变你的姿势，做一些伸展运动，做一些呼吸练习.

And just by changing the posture, it will change your voice and your confidence.

通过改变姿势，就能改变你的声音和自信。

" Without changing its body posture or making any other movements, it might simply raise its front two legs off of the web."

“蜘蛛并未改变身体姿态也没做任何动作，而仅仅把两条前腿抬离蛛网。”

Overall, the human spine is designed to be on the move rather than static in one posture for long periods, which is why movement and changing your posture throughout the day is important to reduce fatigue and subsequent discomfort.

总体而言，人类脊柱就是为了活动而设计的，而不是为了长时间保持一个静态姿势。这就是为什么在一天当中不时活动一下变换姿势对于减少疲劳和（久坐带来的）不适很重要。